You'll need a capture card, but I also suggest swapping to a 750 Ti so you can use Shadowplay. It uses an on-board H.264 encoding chip to do all of the grunt work. It's the same magic behind Shield basically.
To give you an idea of the quality, this was captured with Shadowplay:
https://www.youtube.com/watch?v=EBfiS9KYgpU
If you can up the budget a bit, I'd really suggest looking at something like a Z97 board with one of the Haswell refresh chips or Devil's Canyon, such as the 4690K which will be out in a few months.
There's a number of really neat technologies like SATA Express and M.2 SATA slots that should pan out to be great storage interfaces.
I know right? I had to recheck the price a couple times to make sure I wasn't missing anything. Too good.